Unfortunately, many VPS vendors block port 25 (which is for SMTP) these days, especially in low-cost plans. Let’s assume one cannot change that.
This thread discusses the options to mitigate port 25 blockage.
So, in MiaB you run into this message:
> Outbound mail (SMTP port 25) seems to be blocked by your network.
> You will not be able to send any mail.
> Many residential networks block port 25 to prevent hijacked machines
> from being able to send spam.
> A quick connection test to Google’s mail server on port 25 failed.
Well, you probably knew this ahead of time. What you didn’t know is that there is a wholesale industry conspiracy around port 25 blockage to rip off their “valued customers” or however they put it these days.
Now what are the options?
obviously, they ought to be free of charge i.e. 0 € or $ like netcat or socat
here are the alternatives:
- people could pool an SMTP gateway
- with https://www.proxmox.com/en/downloads/category/iso-images-pmg
- https://www.dnsexit.com/Direct.sv?cmd=testMailServer — offers a 14d trial so that is no good really.
- https://www.dynu.com/Email/StoreForward 10 bucks? what a joke!
- what else ?
There are many vendors offering high-€$ “solutions” which are more expensive than choosing a VPS vendor without blockage to begin with. Conspiracy!
- to be continued -